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https://issues.apache.org/jira/browse/HDFS-4551?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13595481#comment-13595481
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Mark Wagner commented on HDFS-4551:
-----------------------------------
I'm not sure what's best, but io.file.buffer.size=64KB is the setting that I
first noticed this on. Although it defaults to 4KB, everything I've seen
recommended values from 16KB to 128KB, so I don't think 64KB is an unusual
choice.
> Change WebHDFS buffersize behavior to improve default performance
> -----------------------------------------------------------------
>
> Key: HDFS-4551
> URL: https://issues.apache.org/jira/browse/HDFS-4551
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: webhdfs
> Affects Versions: 1.1.2
> Reporter: Mark Wagner
> Assignee: Mark Wagner
> Attachments: HDFS-4551.1.patch
>
>
> Currently on 1.X branch, the buffer size used to copy bytes to network
> defaults to io.file.buffer.size. This causes performance problems if that
> buffersize is large.
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